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02/21/2003 15 25 FAX 403 2483154 BW TECHNOLOGIES 2001/001 <br /> FA - S ro c-K-Tb J TEL 401:%4u 9226 <br /> FAX 403 273 3708 <br /> TOLL FRt:E 100 663 4164 <br /> BW TECHNOLOGIES r_m <br /> 2B4D-2—AVENUE S E <br /> CALGARY ALBERTA CANADA <br /> T2A 7X9 <br /> WWW uasmonitoff cool <br /> r-ebrnary 21, 2003 E-mail 1nf*Qbw1naicom <br /> Tel No (510) 420-0700 <br /> Cambria Environmental <br /> 1144—65th Street Suite B <br /> Oakland, CA <br /> 94608 <br /> USA <br /> Attn. Paul Rasmussen <br /> Re Calibration for GasPolnt Gas Detector <br /> Dear Mr Rasmussen, <br /> Tn regards to your question regarding calibration frequency please take note of the following <br /> . Y 13W Technologies policy for calibration is that the transmitter must be calibrated and <br /> tested once every 3 months, depending upon use and sensor exposure to poisons and <br /> contammants <br /> >= This calibration can be done in the field by a competent teehmman Since the calibration <br /> process Is automatic once in calibration mode there is no requirement for factory <br /> certification <br /> Y The calibration can be done in the field utilizing certified,NTST traceable, calibration gas <br /> and equipment We do not require the transmitter to be removed from service and sent to <br /> the factory or authorized service centre to perform this function <br /> If you have any questions please do not hesitate to call Billy Grewal our Service Managem or call <br /> me directly <br /> Regards, <br /> Lee Morris <br /> Product Manager,Fixed Stand Alone &HVAC products <br /> BW TECHNOLOGIES <br /> Phone (403)248-9226 ext 294 <br /> E Mail lrnzomsra),bwtnet_com <br /> "INNOVATORS 1111 GA5 DETECTION" <br />